Swivel.



.W. R. CLARKSON.

SWIVEL.

APPLICATION FILED NOV. 25, 190B.

Patented Sept. 7, 1909.

A Y [NVE/viole @mfkson BY I VJ-TNESSES ,l Alloy/lays JUN WILLIAM R CLARKSON,

SWIVEL.

Specification of Letters Patent.

0F TENINO, WASHINGTON;

-Patei1ted Sept. 7, 1909.

Application filed November 25, i908. Serial No. 464,360.

To all whom it may concern:

Be it known that l/iliLLrAiir R. CLARK- soN, a citizen ol the vUnited States, residingr at lenino, in the county of Thurston and State of `Washingtoin haveinvented certain new and useful Improvements in Swivels; and l, do hereby declare the following to be a full, clear, and exact description ot' the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in' swivels or connecting means for chains, cables andthe like, and has for its object to provide a ball-bearing swivel which is adapted to instantly conform to the strain placed thereupon, thus preventing the cable, chain or the like from becoming unduly twisted incident to the use thereof.

A further object of my invention to provide a reliably eliicient means for utilizing ball or roller bearings, and thereby, as a consequence, reducing the torsional strain to the minimum, and insuring` that. the opposite ends of the swivel shall quickly respond as to alineineut between the parts. Other Objectis and advantages ot the iuvention will be i'ullv disclosed liereinaiter.

The invention consists ot' certain features and instruin'entalitiessnbstautially as hercinatter fully disclosednind specifically defined by the claim.

In the, acconipanylug4 drawings illustratingmy invention: theY figure discloses my swivel as applied to a chain, cable, rope, rods` etc.

Referring to the drawing, lL and. 2 indicato opposite end portions of my swivel, the member la being the 'female portion, and be ing provided with au ear for engaging the cable 3, or chain, as'tlie case may bent The body portion 4t is provided with a socket designed to receive the stem or shaft 5 ot the member 2, said stem or shaft being provided with a groove (3, of suliicient deptht'o receive one halt ot tl anti-friction balls T, while the other halt ot the balls occupy a contiguous groove or scat'v it in said body portion, beingsuitablvv located to register with, and conuilement the groove t3, as will be readilyl understood. ln order to permit oi' the introduction oi the. auti-trif'tion balls threaded plug 8, whereby when a sufficient' number of balls has been introduced through said opening, said plug may be turned home,

and said balls securely locked vin operative position. Said plug has its inner end formed with a concavity in order to conform to the corresponding contour oit' the bearing balls, thus providing for aiding in forrnin the annular groove for sad-bearine balls. It is also preferable to form an oset or shoulder 9, and a tlange 10, upon the niember 2f* 4and correspondingly vshape the opposite surface. of the body portion et, whereby a dust-proof joint will be formed to insure against undue wear to the interior bearings. Also the shat't 5 'of the member 2 is rovided with an additional groove ll, diilering from the aforesaid groove in having right lined walls, and adapted to receive a plurality of anti-frictional rollers 12 of cylindrical outline, said groove being ot' proper depth to receive but one halt of said rollers, the other halt ot said rollers being accominodatcd by a Keroove 13 formed in a contiguous part ot' the casino' or body portion j#and also havinlggvright lined walls. Also a suitable screw-threaded plug' 14 is adapted to be received by, and inserted into a screwthreaded opening through which the antitriction rolle-rsl are introduced into `said grooves li and '13. ly providing both antitriotion rollers and balls, `greater strength is afforded the parts, and the swivel thus formed will be ableV to resist a much greaten strain placed thereon.

it will be observed that the ears or meinbers l and 2 are adapted for the attachment thereto of either a chain or cable, the links of the latter being designated by the numeral l5.

lllhat l claim is: i deviceot the character describedcomprising interlocking sections, each having a l number ot' coniplemental grooves, one ot said `grooves in each ol said sections hai/inra righi' lined walls and correspondingl bearing rollers arranged in said complementa! 4grooves, the other grooves of said sectionsand bean-ing balls name to this specification in the presence of two subscribing Witnesses.

having concaved walls, arrangel v1in said grooves, andv screwthreade u havin en a ement with one T of said segtio, one 0%? saigd glugs being CQIl- WLJLIAM CLARKSON' 5 caved upon its'inner, end ang the othe' plug Witnesses:

having a'right lined inner-end surface, E. WRIGHT, In testimony w G. BIRCKHEAD.

hereof lt have signed my 

